Magneto-optical storage medium having a recording layer of photoinduced-magnetic material
AssigneeJapan Science and Technology Corporation
InventorsHiroo Munekata, Shinya Koshihara
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Abstract
There is provided a magneto-optical recording medium and a magneto-optical recording device which greatly reduce the amount of time and light (electric) energy required for writing and reading of data while maintaining high-density recording and which can reduce the size and energy consumption of the magneto-optical recording device. The magneto-optical recording medium contains a recording layer (23) formed of a photoinduced-magnetic material thin film, and a memory layer (24) formed of a ferromagnetic thin film having perpendicular magnetic anisotropy, wherein the recording layer is subjected to photoinduced magnetization in which magnetism is produced directly through irradiation with light.
Claims19
A magneto-optical recording medium comprising:
- (a) a recording layer formed of a photoinduced-magnetic material thin film;
- and
- (b) a memory layer formed of a ferromagnetic thin film having perpendicular magnetic anisotropy, wherein
- (c) the recording layer is subjected to photoinduced magnetization in which magnetism is produced directly through irradiation with light under application of a bias magnetic field.
A magneto-optical recording device comprising a magneto-optical recording medium which is fixed mounted, which medium comprises a recording layer formed of a photoinduced-magnetic material thin film and a memory layer formed of a ferromagnetic thin film having perpendicular magnetic anisotropy, wherein the recording layer is subjected to photoinduced magnetization in which magnetism is produced directly through irradiation with light.
A magneto-optical recording device comprising a magneto-optical recording medium which assumes a transportable form, which medium comprises a recording layer formed of a photoinduced-magnetic material thin film and a memory layer formed of a ferromagnetic thin film having perpendicular magnetic anisotropy.
Dependencies are inferred from the claim text.